Ironworkers held about 106,000 jobs in 2004. Structural iron and steel workers held about 73,000 jobs in 2004, while reinforcing iron and rebar workers held about 34,000 jobs. More than 4 out of 5 worked in construction, with nearly half working for foundation, structure, and building exterior contractors. Most of the remaining ironworkers worked for contractors specializing in the construction of homes; factories; commercial buildings; religious structures; schools; bridges and tunnels; and water, sewer, communications, and power lines.
Structural and reinforcing iron and metal workers are employed in all parts of the country, but most work in metropolitan areas, where the bulk of commercial and industrial construction takes place.